To be spiteful means to want to hurt, annoy, or upset someone on purpose, usually because you feel angry or resentful toward them. When someone acts out of spite, they're not trying to help themselves or accomplish anything useful. They just want to make someone else feel bad.

Picture a student who gets mad at a classmate and then deliberately knocks over their science project. That's spiteful: the action doesn't benefit anyone, it just causes harm. Or imagine someone who writes mean comments about a friend's artwork online, not because they care about art, but because they want to hurt that friend's feelings.

Spiteful behavior usually comes from feeling wounded, jealous, or angry, but it makes things worse rather than better. Someone might do something out of spite after feeling rejected or embarrassed. A spiteful remark is designed to sting. You might hear someone say, “She did it just to be spiteful,” meaning the person's only goal was to cause pain.

The word spite itself means a desire to hurt or annoy others. Spiteful people often end up hurting themselves too, because acting mean damages friendships and trust.